diff --git a/src/plugins/nonebot_hk_reporter/utils.py b/src/plugins/nonebot_hk_reporter/utils.py
index 509466b..b43329d 100644
--- a/src/plugins/nonebot_hk_reporter/utils.py
+++ b/src/plugins/nonebot_hk_reporter/utils.py
@@ -7,6 +7,7 @@ import base64
 from pyppeteer import launch
 from html import escape
 from hashlib import sha256
+from tempfile import NamedTemporaryFile
 
 from .plugin_config import plugin_config
 
@@ -44,14 +45,14 @@ class Render(metaclass=Singleton):
             return str(data)
 
     async def text_to_pic(self, text: str) -> str:
-        hash_text = sha256(text.encode()).hexdigest()[:20]
         lines = text.split('\n')
         parsed_lines = list(map(lambda x: '<p>{}</p>'.format(escape(x)), lines))
         html_text = '<div style="width:17em;padding:1em">{}</div>'.format(''.join(parsed_lines))
-        with open('/tmp/text-{}.html'.format(hash_text), 'w') as f:
-            f.write(html_text)
-        data = await self.render('file:///tmp/text-{}.html'.format(hash_text), target='div')
-        os.remove('/tmp/text-{}.html'.format(hash_text))
+        with NamedTemporaryFile('wt', suffix='.html', delete=False) as tmp:
+            tmp_path = tmp.name
+            tmp.write(html_text)
+        data = await self.render('file://{}'.format(tmp_path), target='div')
+        os.remove(tmp_path)
         return data
 
     async def text_to_pic_cqcode(self, text:str) -> str:
@@ -68,3 +69,8 @@ async def parse_text(text: str):
     else:
         return text
 
+async def test():
+    ren = Render()
+    res = await ren.text_to_pic('12333333')
+    logger.debug(res)
+nonebot.get_driver().on_startup(test)